黃花墊柳檢視原始碼討論檢視歷史
黃花墊柳 |
中文名:黃花墊柳 學 名:Salix souliei Seemen 界:植物界 門:被子植物門Angiospermae 綱:雙子葉植物綱Dicotyledoneae 目:楊柳目 Salicales 科:楊柳科Salicaceae 屬:柳屬Salix 種:黃花墊柳 分布區域:中國四川、 |
黃花墊柳,是柳屬植物,墊狀灌木,干匍匐,伸長,暗褐色,生有不定根。當年生枝紅褐色,無毛或有疏白柔毛。芽小,廣卵形,先端鈍。 [1]
黃花墊柳形態特徵
墊狀灌木,干匍匐,伸長,暗褐色,生有不定根。當年生枝紅褐色,無毛或有疏白柔毛。芽小,廣卵形,先端鈍。
葉橢圓形或卵狀橢圓形,長8-13毫米,寬4-6毫米,萌枝葉長可達2.7厘米,寬可達1.2厘米,先端鈍,基部楔形或鈍,革質,上面亮綠色,具皺紋,無毛,中脈凹下,下面蒼白色,或有白粉,幼時密生白色長柔毛,後無毛,中脈明顯隆起,側脈不顯,全緣;葉柄長4-7毫米,幼時有毛。
花序與葉同時展開,橢圓形,少花,着生於當年生枝的頂端,軸有疏柔毛;雄蕊2,花絲無毛,花葯卵圓形,黃色;
苞片長圓形,黃綠色,先端鈍圓,約為雄蕊長的1/2,生有疏緣毛或無毛;有腹腺和背腺,短圓柱形;
子房卵形,有短柄,無毛,花柱短,2裂,柱頭長圓形,2裂;苞片長圓形,先端圓,無毛或有疏緣毛,僅具腹腺,短圓柱形,約為苞片長的1/3,稀具1小背腺。
蒴果長達3毫米。花期6月,果期7-8月。 [2]
Salix souliei Seemen in Fedde, Rep. 3: 23. 1906; Schneid. in Sarg. Pl. Wils. 3: 62. 1916; Hao in Fedde, Rep. Beih. 93: 52. t. 7: 14. 1936; H. Ohashi, Fl. East. Himal. 15 (third Rep.). 1975, pro syn. S. lindleyana Wall. apud Ariderss.; 西藏植物名錄, 49. 1980.
Shrubs cushion-shaped; trunk dull brown, creeping. Juvenile branchlets russet, glabrous or sparsely white downy. Buds broadly ovoid, small. Petiole 4-7 mm, pilose when young; leaf blade elliptic or ovate-elliptic, 0.8-1.3 cm × 4-6 mm, to ca. 2.7 × 1.2 cm on shoots, leathery, abaxially pale or pruinose, densely white villous when young, glabrescent, adaxially bright green, wrinkled, glabrous, base cuneate or obtuse, margin entire, apex obtuse; midvein raised abaxially. Flowering coetaneous. Catkins terminal, ellipsoid, few flowered; rachis sparsely downy; bracts yellowish green, oblong, sparsely ciliate or glabrous, apex obtuse or rounded. Male flower: glands 2, shortly cylindric; stamens 2, glabrous, ca. 2 × as long as bracts; anthers yellow, ovoid. Female flower: adaxial gland ca. 1/3 as long as bracts, abaxial gland sometimes present, small; ovary ovoid, glabrous, shortly stipitate; style short, 2-cleft; stigma oblong, 2-lobed. Capsule to 3 mm. Fl. Jun, fr. Jul-Aug.
黃花墊柳生長環境
黃花墊柳生長於海拔4200-4800米的高山草地或裸露岩石上。模式標本采自四川康定。